Product manual

Installation instructions, Modular cabinet power cabling

Technical Product Manual - DCT1800-GAP

TD 92093 (1/LZBNB 103 108 R4D) / 2006-03-09/ Ver.C

108

Fig. 70 Schematic diagram of powering the modular cabinet and 3 CLUs/CLU-Ss/SLUs

by a transformer and 5 CLUs/CLU-Ss/SLUs by a 48 Vdc supply

1. Connect the power cable (TRENB 101 01) in the modular cabinet to the power transformer.

2. Make a cable like TRENB 101 01 by crimping two faston connectors at one end of a 2.5 mm

wire cable with a length of about 2.5 m.

3. Connect this cable to the PW-EXT connector on the MCCB. See figure 71 for the polarity.

4. Connect the power supply at the other end of the cable.

5. Connect the positive pole of the power supply to the ground of the modular cabinet by repositioning

the ground bridge, when local regulations require this.

Note:

There are two sets of PW1, PW2 and PW3 terminals; one for backplane powering and one for external

powering.

WARNING

When using the PBX power supply, make sure that the capacity of the

supply is sufficient to power both the PBX and the modular cabinet.

Modular

cabinet

Internal

48 Vdc

Backplane

PW-

EXT

PW-

CLUs,

CLU-Ss

or SLUs

Transformer

MCCB

055